Stitch-forming mechanism for sewing-machines.



JQP. WRIST STITGH FORMING MECHANISM FOR SEWING MACHINES.

APPLIUATION FILED JAN. 2, 1908.

-Ps1tented Dec.5, 1911.

4 SHEETS-SHEET 1.

PV/TNESSES:

J. P. WEIS.

STITCH FORMING MEGHANISM FOR SEWING MACHINES. 1 APPLICATION FILED .TAN.2, 1908. Q 7

1,010,831. Patented D9115, 1911.

4 $HEBTS-SHEBT 2.

lV/TNESSBS:

J. P. WBIS.

STITCH FORMING MECHANISM FOR SEWING MACHINES.

APPLICATION FILED 1111.2, 1908.

1,010,831. Patented Dec.5,1911.

4 SHEETS-SHEET 3 l I 70 2 as 60 H 5* I! #5 [J 2 14 J. P. WEIS.

STITCH FORMING MECHANISM FOR SEWING MACHINES.

. APPLICATION FILED JAN. 2, 190a.

Patented D60.5, 1911.

. 4 SHEETS-SHEET 4.

WITNESSES UNITE STATES PATENT o moE.

JOHN P. WEIS, OF NY ACK, NEW YORK, ASSIGNOR TO METROPOLITAN SEWING MACHINE COMPANY, OF NY ACK, NEW YORK, A CORPORATION OF NEW-YORK.

STITCH-FORMING MECHANISM FOR SEWING-MACHINES.

To all whom it may concern:

Be it known that I, JOHN P. .WEIs, a

citizen of the United States, residing in Nyackg, county. of Rockland, and State of New York, have invented a new and useful Improvement in Stitch-Forming Mechanism for Sewing-Machines, of which the tion wlth the take-upplates and forming following is a description.

This invention relates to sewing machines and, ,particularly, to the stitch-forming mechanism thereof.

Among the object s of my invention may be noted the following: to provide a chainstitch-forming mechanism by which a plurality of threads can be accurately and perfectly controlled throughout the stitch forma-' tion by the combination and cooperation of a few, simple and inexpensive parts to provide a stitch-forming mechanism whereby two lines of chain-stitches can be produced in parallelism with or without a connectingthread;

to provide a stitch-forming mechanism wherein a two-part looper, in combination with other simple elements, is enabled to produce parallel rows of chain-stitches with a high degree of accuracy and certainty and without the possibility of skipping stitches irrespective of the 'speed of the machlne;

to provide a stitch-forming mechanism including certain simple elements whereby the threads are positively, and accuratellyi handled both above and below the wor ,.thus preventing the formation of slack either above or below the work and hence preventing the production of loose and unsightly stitching.

With the above objects in view, and others which will be detailed during the course of this description, my invention consists in the parts, features, elements and combi-- nations of elements hereinafter described;

and claimed.

In the drawings forming part of this description: Figure 1 shows in side elevation the upper part of the frameof a sewing machine having my invention applied thereto; Fig. 2 is a'front end elevation of the machine; Fig. 3 is a side elevation of-the takeup detached from the machine and showing the thread-guiding take-up arms, which are. attached to the needle-bar, in two positions; Fig. 4 is a side elevation of one of the take-up plates; Fig. 5 is a side eleva tion of the other of the take-up plates; Fig.- 6 is an'elevation of the supporting-plate for Specification of Letters Patent.

'. Application filed January 2, 1908. Serial No. 409,043.

atentea Dec. 5, 1911.

the take-up; Fig. 7 is an elevation of the screw and washer employed in securing the two plates of the take up properly together at their upper ends; Figs. 8 and 9 show, respectively, the two styles of thread-guiding take-up ,arms' which are supported by the upper end of the' needle-bar for cooperapart of the take-up; Fig. 10 is a top-plan view of a portion of the looper. mechanism, illustrating the same in a certain position;

Fig. 11 is a front elevation of the mechanism shown in- Fig. 10, a part of this figure beingeshownin section; Fig. 12 is a rear end elevation of the mechanism shown in Fig. 10; Fig; 13 is. a front and Fig. 14 is a rear view of-the looper; Fig. 15 f is a topplan of the looper-shaft; Fig. 16; is a topplan of the spreader portion of the looper;

' Fig. 17 is a detail plan view of the looperand which" lever, at its forward en is pivotally connected by link 10 with the clamp 11 rigidly secured to the needle-bar 12, which latter is caused-thereby to vertically 3 reciprocate in the head of the machine, wherein it has bearings. .The driving-shaft 13 is provided at its rear end'with the usualeccentric, not shown, which actuates the usual eccentric strap and rod, not shown, ,which is, in turn, pivotally connected at its upper end in the usual manner to the rearwardly-extending arm 14 of the needle-lever'4. This is such a common construction that it has been deemed unnecessary toillustrate the same. The hood 15, secured to the and its strap and rod; and 16 is the usual driving-pulley of the machine. ing-shaft 13, near its rear end, is provided 2, the gear 18 being provided with a crank.-

frame of the machine, coversflthe eccentric The drive-{.

with the pinion 17,, which meshes with the. 9 gear 18 both shown in dotted lines in Fig.

19 engagedbythe 10w end of the amni- 20, the upper end of which latter is ball jointed at 21 to the short arm 22 of the bellcrank lever journaled on the rearward extension 23 of the needle-lever pivot 5, the other arm 24 of the bell-crank lever being ball-jointed at 25 to the connecting-rod 26 extending forward into pivotal connection at 27 with the extension 27 clamped to the bar 28 journaled in the guide-yoke 27 and in the head of the machine, said bar having clamped to the lower end thereof a substantially U-shaped, vertically-disposed frame 29, the lower arm of which is provided with the forwardly-reaching and downwardlyextending thread-finger 30 provided with guide-eyes in its end for leading the vthread into a position such that it may be laid, in ornamental fashion, back and forth across the line of seam, or so as to make a type of I cross-stitches as will be readily understood.

The thread 31 is carried to the thread-finger 30, through the guide-eye 32, guide 33 carried by the lower arm of the rame 29 and guide-eyes 34 in the lower portion of the thread-finger. The needle-bar carries the needles 12" and 12", the former of which the shorter, on account of the fact that it is nearer to the point of the looper as the latter moves forward to take the loops of needle thread and is the first to coiiperate with the looper as the needles'rise to throw out their loops for the purpose.

Cotiperating with the needles is a primary looper '35, the form of which is substantially that shown in Figs. 13 and 14, the

same having, near its shank 36, a, loop-holding shoulder 37, and the shank 36 bein formed into a split-bearing 38 provided with a screw 39 for clamping the shank to its supporting-pin 40, said shank also havin the straight, depending portion 41, the ower end of which is formed into the circular enlargement 42, which enters the slot 43 of the looper-shaft 44, which is journaled in bearings'45 carried by the bracket 46 secured to the bed-plate 47 of the machine by means of the bolt or screw 48. The shaft 44 is provided with the reduced extension 49, which forms with the main portion of the shaft a shoulder 50, and which has, at its extreme outer end, the screw-threaded portion 51. Surrounding the portion 49 of said shaft is the sleeve-portion 52 of the eccentric-strap 53, which surrounds the eccentric 54 shown in dotted lines in Fig. 12, which is secured to the driving-shaft 13 by means of the collar 55 and spot-screw 55, the said sleeve-portion 52* being held 'in proper position upon the portion 49 of the shaft 44 and at one end against the shoulder 50, by means of the col lar 56 and nut 57 secured upon the end 51 of'the shaft. The eccentric and strap, thus connected to the shaft 44, give to 'the latter right-line reciprocations through its bear looper-shank, gives to the looper, on its journal-pin 40, a lateral vibratory movement substantially at a right-angle to its length. The longitudinal movement ot the looper is imparted through the rod 9 pivotally connected at 58 to the looper-support 59 journaled at its lower end upon the shaft 44 by means of its sleeve -60, the latter having, through its top, an aperture. 61, through which projects the enlargement 42 of the tail-piece 41 of the looper-shank, thus permitting the looper to have its lateral vibration without impediment by the sleeve 60, and at the same time permitting said looper to have its longitudinal movement imparted by the looper-support 59, as the latter is oscillated by the rod 9. The looper-support 59 is provided with the bearing 63 in which the fulcrum-pin 40 of the looper is journaled, said pin being retained in said-bearing by means of the head 64 at one end and the looper-shaft clamped to its other end. Thus, the looper is permitted lateral vibratory movements on the loopersupport, while, at the same time, partaking of the oscillatory movements of said support.

Carried by the looper-support 59, above the journal of the looper thereon, is a secondary looper 65 carried by a shank 66, the lower end ofwhich is bent at a rightangle to provide a supporting-base 67 having a couple of openend slots 68 for the purpose of attaching it adjustably to the top of the looper-support, said base being held by means of a couple of screws 69 passing through said slots 68 and tapped into the looper-support, as shown in Fig. 17. By this means, a suitable amount of lateral adjustment of. the secondary looper on the looper-support is provided for; and it will be noticed that the secondary looper is fixed to thelooper-support and, in consequence, partakes of its movements entirely and .has

none of the lateral vibrations of the looper proper. The back 35' of the looper,see Fig. 14,- -is made flat and the adjacent face of the secondary looper is also made flat, as shown at 65 in Fig. "16,- these two flatsurfaces being provided for the purpose of enabling the looper and secondary 1ooper., to lie as close as possibleto ether during one movement'thereof, as wil be presently explained, and it will also be notedthat the two looper parts are co-extensive at their forward ends so as to produce a single loopentering point for primary engagement of the loops of needle-thread, this being clearly} shown in'the diagrammatic views and also in the top-plan of Fig. 10. i

For the purpose of holding the loops of needle-thread momentarily, in proper position for subsequent needle penetration, I have provided a loop-retainer consisting of' the supporting-shank 70 and inclined bodyportion 71 having on its back, considering the direction of feed, one or more loop-detaining fingers 72, the same being shown as slightly curved and producing, in combination with the adjacent portion of the re-' tainer-body, notches or recesses 73 on which the loops of needle -thread may be temporarily held, the said retainers being in the nature of hooks upon which the loops of needle-thread may be impaled. This retainer is supported on the frame of the machine in advance of the stitching position and the inclination of its bodyis given toward the stitching position, in order that its loop-retaining hooks or fingers may be prop: erly positioned relatively to the path of reciprocation of the needles and relatively to the path of movement of the looper. The loop-retainer is supported in proper position on the machine by means of the bracket 70 adjustably secured to the front standard of the machine by screws70 assing through elongated slots 70 in said bracket andtapped into said standard, as shown in Figs. 11 and 12', This adjustment enables the retaining-hooks 72 to be moved laterally toward and from the body of the looper, or

in a path paral-lelwith the feed. The supporting-shank 70 is 'adjust'ably secured to the bracket 70 by means of the screws 74 passin" through the elongated slots and tappe into said bracket. This adjustment permits the retaining-hooks 72 to be moved to and fro in a path at a right-angle to the pathof feed or substantially parallel with the longitudinal axis of the looper. This mode of attachment of the supporting-shank .70, provides for a proper amount of'adjust ment of the retainer relatively to the path of-reciprocation of the needles and the paths of movement of the looper, so as to get the proper efiects, which will be presently referred'to.

' From the foregoing description, it will be seen that the stitch-forming mechanism comprises essentially one or more needles, a twopart looper -and a loop-retainer having one or more fingers or hooks for temporarily holding the needle-loops; and that the two parts of the looper so cotiperate'as to enter the loop together and then separate soas to open the. loop and carry it in openform into engagement. with the loop-reta ner where it is temporarily held so that the needle in its descent may pass therethrough and thus make a chain-stitch.

In a two-needle machine, owing to thefact that the looper reaches one needle be: fore it does the other, after the needles have retrograded andthrown out their loops, the inner needle, or the needle whichthe looper reaches first, must be set a little higher than the outer-needle, in order ,that the loop, of,

the outer needle may not carried above.

the path of movement ofthe point of "the "looper in the. forward movement of the not'produce the proper efiect in the two lines of stitching, since one thread would be drawn into the work more than the other and one'line of stitching would be tighter than the other. This "would be defective work andwould result in spoiling the product.- To overcome thisdisadvant-age, I have e uippedmy machine with a special formof ta e-up calculated to"con'trol and roperly 'manipulate the two needle-thr'ea s, draw them in evenly and'set the stitches with the same'degree of tension, and thus produce lines of stitching having precisely the same applearance.

y take-lip is shown in Figs. 1 to 9, which will now be specially referred to. The take-up supportconsists of the angular plate 76 shown particularly in Figs. 2, 3 and 6, the main part ofwhich is provided with the elongated slot 77 through which the screw 78 is passed and which.

screw )is tapped into the head of the .ma-

chine. The elongation of the slotprovides.

for the necessary lateral adjustment of the support upon the head ofthe machine, in order t oproperly position thetake-up plates relatively to the needle-bar for producing the requisite action upon the two threads during the operation of the machine; that is, regulate the take-up action 'on either' thread. Thesupporting-plate is curved longitudinally'and at it-send opposite'the slot isprovided; with the angular extension 79 s in which the vertical, elongated. slot 80 is formed, and in which the open-end slot 81 is formed, these two slots being in substantial-alinement; The take-up plates are two in number, one of which is indicated by 82. and the other of which is indicated by 83, these two plates being-arranged as shown inFi'g. '1 and adjustably secured to the angu-. lar extension-790i the supporting-plate by screws 84 which pass through apertures 85 in said take-up plates, and the respectiveslots 80 and 81 in the said angular portion.

' Each plate has substantially the same form, vas clearly illustrated in Figs. 4 and 5, and,

when placed together and in parallelism, as

shown in Fig. 1, are arranged-on opposite sides of the angular portion oflthe sup-1 I porting-plate, 'so as to space the same sufli- 32 1 5 thread-guiding arms,of which there are" ciently for the free 'movement of one of the three jcarried by the topof the needle-bar.

These thread-guiding arms are shownin de-;-'

tail in Figs: 8 and 9, the one 86 being pro;

vided with the 'apertured supporting-sham:

portion with the elongated slots 91. 'In

operation, the thread-guiding arm 89, of Fig. 9, is located so as to operate in the space between the two take-up plates, while two arms 86, such as shown in Fig. 8, are ,loca-ted one on each side of the combined take-up plates, as clearly indicated in-Fig.

1. The top of the take-up plates are ex tended to a position slightly above then per limit of movement of the needle-bar an in consequencesof the thread-guiding arms, and

are rigidly joined together by means of the interposed washer 92 and the clampingscrew 93, shown in detail in Fig. 7. By

means of the elongated slots in the angular port-ion of the supporting-plate, the take-up plates can be vertically adjusted in order to change the time of action of the cams of said plates upon the respective threads, and the elongated slot in the shank-portion of the supporting-plate provides for an adjustment of the' two take-up plates relatively to the needle-bar, so as'to produce more or less ofa-take-up action upon each of the two threads, as will be presently understood.

Each take-up plate consists of the baseportion 94 through which the holding-screws are passed, as previously described; and, on the outer edge, with the bight or incurve 95 extending vertically just above said base, and having formed, in continuity with said bight-or incurve, the straight portion 96, which extends substantially parallel with what may be termed the longitudinal axis of the plate, or a line drawn centrally of the latter from end to end. Formed in continuity with the said straight portion, at its upper end,,is an incurve 97 which eventu-,

ates'in a straight portion 98 substantially parallel with the straight portion 96, the two straight portions thus connected by the incurve 97 producing the shoulder 99. The straight portion 98 extends to the top of the take-up plate. The inner edge of each of the plates is formed near its bottom, just above its supportingbase, with a lateral extension 100 roducing a notch-or shoulder 101 in combination with a straight portion 102, which extends upwardly from said extension 100 to the point 103, where the edge is incurved as at 104, and then outcurved as at 105, the outcurve extending 'to a ,degree sufiicient to'produce the'cam-projection 106, above which the edge of the plate is extended inwardly at an inclination to the point 107 from which the edgeis extended to the top of the plate in a straight line 108 in parallelism with the straight edge98 on the outer edge of the plate.

Inthreading up the machine, guides 109 are provided at the rear end of the overhanging-arm through which the respective threads are led, the thread for the inner needle being indicated at a and the thread for the outer needle being indicated at 6, these two threads being carried, respectively, through the tension-devices 110, then through the thread-guide 111 on the arm of the machine, then through the thread-guide 112 on the needle-lever, and thence to the inner one of the thread-guiding arms 86,

and then through the elongated slots in the arm 89 and then through the apertures in the outer thread-guiding arm 86, and thence down to the needles, being separated at the needle-clamp by the screws 113. The machine thus threaded, the stitchforming mechanism will operate substantially as follows: Assuming that the needles have descended to substantially the lowest position,

, from running clear to the shank of the looper by the shoulder 37 of the latter, see

Figs. 22 and 23. As the looper begins to move rearw ardly, as shown in the latter' figures, the looper proper is moved laterally on its support and away from the secondary looper, which latter, be it remembered, has but a back and forth oscillatory movement "with the looper-support. The sidewise ,movement of the looper causes the spread ing of the two loops-carried by the two-part looper, and enables the looper to carry both loops of, thread into engagement with the retaining-finger, as said looper moves back- .wardly and the needles move downwardly. jiIn. this condition, the needles will find their previously thrown out loops as they pass through the work again and descend below the same to their lowermost position; that is to say, said loops, as shown in Fig. 23, will firsthave been spread and then cast upon the finger of the loop-retainer, in which con-f dit-ion they will assume substantially theposition of Fig. 30,where a'single retainmg;

finger is used with two needles. Hence, when the needles make their seconddescent, as just noted, the inner, shorter needle will pass through both loops-thus held upon the hook of the retainer 1nd,which loops are still held spread by the forward end of the 1 enter the new loops thrown outby the nee "-5 two-part looper, while the outer, longer need e will pass by the two loops. The looper, after this has occurred, by continumg 1ts backward movement, will ractically deposit'the loops of needle-thread upon the inner needle, which latter passes its own thread throu h said loops, a subsequent loop of whic is caught, together with a subsequent loop of the outer needle, by the two-part looper in its next forward movement. As the said looper moves to its rear extreme, the' looper ,proper moves over to ward the secondary looper, so as to consolidate the same and make them become practically' as one, asindicated in Figs; 18 and 19, whereupon: in this form, they will again move forward, as the needles retrograde, and

dles, as shown in 20 and 21, said 100 ers passing forward into said loops until .t e latter engage the shoulder 37 as before, whereupon -the same manipulation of the loops w ll take place by..the'spreading of the looper and the retention of the loops upon theretainin -hooks. If two retaining-hooks are rovide as indicated in Figs. 24 to 29 and j ig. 31, said'loops will be caught upon and retained by the respective retaininghooks with the result'that, when the needles descend a ain, as shown in Fig. 33, each needle wi 1 pass through its previously formed loop, the latter thus b ing held and retained by its own thread, as in the formationof an ordinar chain stitch. The difference in the stitc produced by using one or two retaining-fingers is that, when one finger is used, the inner needle through both loopspreviously formed, thus making a cross, oversea ning or similar stitch; while, when two *hoolls are on the retaining-device, the needles through their own previously formed loops, thus producing two parallel lines of'chnil lstitch1ng,'with no connecting, cross or overseamin thread between the'two. Upon this part 0 my invention, I desire to lay great stress,'s ince, so far as I know, no mach ne has ever been produced wherein two] gar: allel, unconnected lines of 'stitchin coul reduced with a'single non-three '-carrying ooper without the addition of any thread carrying part. This-feature of convertibility of the machine, by the mere addition of a simple device, such as a two-hooked re tainer as a substitute for aIsingIe-hOoked reminer, i a n 9 m t oimy nv ntian, and'u'pon it I 'tes ay's r s's With reference to the proper. stitch 01 mation, it is essential that atake-u be em- P y w c ll P op r y marlin ate th threads in a manner to create no more ten sionlupon one than upon the other, and in a manner to produce two independent lines of stitching having precisely the same appearance and the stitches of which passes drawn in and set to exactly the same extent.

I accomplish this feat in my machine by the useof a take-up mechanism, substantially as indicated and heretofore described in .detail, the operation of which will now be set forth. 1

As'the needle-bar descends, it carries with it the two threads a and b, one of which runs up andf down the face of the take-up and the other of which runs up and down the hackof the take-up. The threads bein properly held under tension, no more she can get into the stitches than is produced by the take-up cams, or conformation of the active edges of the take-up; and, since the threads extend from eye to eye in the several guiding-arms of the take-up and across the edges of said take-up, the threads will always held, in loop form, firmly in contact w1th the manipulating edges of said take-up, and, especially, since, when slackis formed' in the threads during the stitch formation, the looper] is in possession of said ,slack, as will be readily understood u on'reference to Fi 20 to 23 and 26to 29.

ow, asthe needlear descends, the slack slack of the thread a of the inner needle,

hence, thedifierence in osition of the two, shoulders 9,9'an d-106; s the'threads passthe respective shoulders and -run down the edges of the take-up, said'threads' will have no strain upon them, since the movement of the arms and the'needles are the same. And, when the needles reach their lowest positionand areabout to retrograde and need thread for the loop formation, the

thread b will have reached the bight 9.5

during the period of in t ese two p0 and the thread (i the rest or sup' rt 101 and Y sitions, the needles will retrograd the loops will be thrown out, the loo rs will have moved forward and drawn t efloops to the fullest extent, and the spreading action of the looper will have taken place." As the needles ascend, and the" threads, respecy; pa r m the bigh and e e 101',"a nd onto the respective longitudinal dge bf th -HP, th 'l op i l be moving hackwardly, thus giving up the loops to the same extent as the thread is bein drawn in,- while running over said longitudinal edges, and as the threads pass over' the respective shoulders, the stitches will be 'set'in the work;'and, as the shoulder 106 on the back edge of the take-up is lower than the shoulder on the front edge thereof,

the difference in the'length of the inner and outer needles is compensated for, since the said lower shoulder on the back edge of the take-up begins to set the loop of the inner needle before the loop of the outer needle is operated upon for likepurpose. From the time the respective threads pass the take-up shoulders, the loops will have been set and the needles will be reaching their upper extreme, during which time there will be substantially no strain upon said threads. From this mode of operation, it will be readily understood that the respective needle-threads are, at all times, under proper control for stitch-making purposes, which stitches will be quite uniform throughout the seam.

Among the essential features and advantages of my invention, I desire .to lay stress upon the following: The two threads are under perfect control at; all times both above and below the work-plate so that when slack is required for needle or looper it is given or'provided to the extent needed. and when the thread should be substantially taut the slack is eliminated without strain; in two-needle machines, the difference in take-up action required for the two needlethreads is provided-by a single, simple takeup device, thus enabling two lines of chainstitches tobe produced having the same appearance and no difference in tension on the threads of the loops; a simple chain-stitch mechanism is provided by which either a cross, overseaming, or similar stitch can be produced, or several independent lines of stitching can be produced, the change from one to the other being secured by simply changing the form of the loop-retainer; the provision,of a two-part looper renders certain the opening of the loops and the entrance of the needles therein, thus preventing the skipping of stitches and rendering the stitches absolutely uniform; the stitchforming mechanism may comprise one .or more needles, a single, two-part'looper, and a retainer of single or duplex character, that is, having one or more retaining-hooks.

Having thus described my invention, what I claim and desire to secure by Letters Patent is:

1. A stitch-forming mechanism for sewing machines having, in combination, a needle, a looper having two cooperating parts movable laterally relatively, a retainer upon which the looper deposits the loop, and means for actuating the movable elements.

3. A stitch-forming mechanism having, in

combination, a needle, a looper having two 5. A stitch-formin mechanism having, in

combination, a need e, a looper consisting of two parts having their longitudinal movements together and having relative lateral movements, a retainer, and means for actuating the needle and the two-part looper, so that the two-part looper will enter a needleloop, spread the same and then deposit it upon the retainer.

6. A stitch-forming mechanism having, in combination, a needle, a looper-support,- a looper having two cooperating loop-engaging parts one of which is journaled on the looper support and the other of which is fixed to said sup ort, means for adjusting the parts of the looper relatively to regulate their spreading action, andmeans for actuating the needle and looper.

7. A stitch-formin mechanism having, in combination, a plura ity of needles, a single looper coiiperating with said needles, a take up comprising a stationary device having a plurality'of active edges and a movable device for operating respectively upon the needle-threads, and means for actuating the movable elements.

8. A stitch-formin mechanism having, in combination, a plura ity of needles,- a looper cooperating with said needles, a take-up having a plurality of'active edges for operatin upon the respective needle-threads, thread guiding arms having means for separately guiding the several needle-threads so as to keep said threads in engagement with the active edges of said take-up, and means for actuating the movable elements.

9. A stitch-forming mechanism having, in combination, a needle, a looper, a take-up, and a plurality of thread-guiding arms, the take-up comprising two plates and the guiding-arms being arranged between and on opposite sides of said take-up plates, and means for actuating the movable elements.

10. A stitch-forming mechanism having,

in combination, a needle, a looper, a take-up having two opposite active edges, and a plurality of thread-guiding arms for carrying the threads in engagement with said edges,

in combination, a needle, a looper, a take-up In testimony whereof I have hereunto having two opposite active edges, and signed my name in the presence of two subthread-engaging arms, thetake-up being adscribing witnesses.

jnstable laterally so as to produce the de- JOHNP. WEIS. 5 sired cooperative relation between the same Witnesses:

and the thread-guiding arms, and means for M. B. PK'ITERSON,

actuating the movable elements. FRITZ BENDEB. 

